Method and apparatus for ammonia (NH3) generation

Active Publication Date: 2008-06-26
ARIZONA STATE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0021]In still another embodiment, another apparatus for generating ammonia is provided. The apparatus includes a first chamber that is constructed and arranged to hold a nitrogen-containing electrolyte, a second chamber that is constructed and arranged to hold a hydrogen-containing electrolyte, and a worki

Problems solved by technology

The temperatures and pressures involved in this process require large energy expenditures.
The Haber-Bosch process also requires a delicate balance of temperature and pressure to optimize ammonia output.
Thus, much of the energy expended in the manufacturing process is wasted on these competing processing variables.
A number of attempts have b

Method used

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  • Method and apparatus for ammonia (NH3) generation

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Embodiment Construction

[0049]An apparatus 10 according to an embodiment of the present invention is illustrated in FIG. 1. As shown in FIG. 1, the apparatus 10 includes a housing 12 that includes a plurality of chambers, including a first chamber 14, a second chamber 16, a third chamber 18, and a fourth chamber 20. As illustrated, the first chamber 14 and the second chamber 16 may be separated by a first separator 22, the second chamber 16 and the third chamber 18 may be separated by a second separator 24, and the third chamber 18 and the fourth chamber 20 may be separated by a third separator 26. The separators 22, 24, and 26 are each connected to the housing 12 so as to form an air tight seal between each separator and the housing 12.

[0050]Although the housing 12 is illustrated as having a generally cylindrical shape, other shapes may be used in accordance with the present invention. For example, in some embodiments, the housing 12 may have a generally rectangular shape. The illustrated embodiment is no...

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Abstract

Various apparatuses and methods for producing ammonia are provided. One embodiment has uses a plurality of environments and an electrode configured to be exposed to the plurality of environments. The electrode is configured to receive hydrogen while being exposed to one of the environments, reduce nitrogen while being exposed to another environment, and allow the hydrogen and nitrogen to react with each other to form ammonia. Other embodiments provide for simultaneous hydrogen oxidation and nitrogen reduction at the same electrode, which in turn react for formation of ammonia.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of priority from U.S. Provisional Patent Application No. 60 / 871,244, filed Dec. 21, 2006, which is incorporated herein by reference in its entirety.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention generally relates to a method and apparatus for generating ammonia (NH3).[0004]2. Description of Related Art[0005]Currently, annual ammonia production exceeds 110 million metric tons, which is more than any other inorganic chemical. Approximately 80% of ammonia produced is used in agriculture. The modern, large scale manufacture of ammonia is accomplished through the Haber-Bosch process. Originally patented in 1910 (U.S. Pat. No. 971,501) by Fritz Haber and Robert Le Rossignol, the process was later commercialized by Carl Bosch and was first used for wide scale ammonia production by Germany in World War I. The Haber-Bosch process has remained fundamentally the same since th...

Claims

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Application Information

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IPC IPC(8): C25B1/00C25B15/02C25B9/00
CPCC25B1/00C25B9/06C25B1/02C25B9/17
Inventor FRIESEN, CODY A.HAYES, JOEL R.
Owner ARIZONA STATE UNIVERSITY
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